In Isaac Newton’s time, the terms “acceleration” and “second derivative” did not exist, so he could not have deduced F=ma, the second law of motion. This has been unscientifically credited to Newton, says a research paper. The paper “Isaac Newton, Leonhard Euler and F=ma” was written by Ajay Sharma, assistant director for education with the Himachal Pradesh government. “Newton gave a velocity dependent force and Euler an acceleration dependent force. […]